212430131340 has 96 divisors (see below), whose sum is σ = 680543990784. Its totient is φ = 48500632320.

The previous prime is 212430131323. The next prime is 212430131357. The reversal of 212430131340 is 43131034212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (212430131323) and next prime (212430131357).

It is a super-2 number, since 2×212430131340² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212430131340.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87430 + ... + 657650.

It is an arithmetic number, because the mean of its divisors is an integer number (7088999904).

Almost surely, 2^212430131340 is an apocalyptic number.

212430131340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212430131340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340271995392).

212430131340 is an abundant number, since it is smaller than the sum of its proper divisors (468113859444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212430131340 is a wasteful number, since it uses less digits than its factorization.

212430131340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571127 (or 571125 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 212430131340 its reverse (43131034212), we get a palindrome (255561165552).

The spelling of 212430131340 in words is "two hundred twelve billion, four hundred thirty million, one hundred thirty-one thousand, three hundred forty".